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Finding the Fourth Proportional to 54,560.40, 81,840.60 and 47,648.40

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Solution

The fourth proportional to 54,560.40, 81,840.60 and 47,648.40 is: 71,472.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,560.40 : 81,840.60 = 47,648.40 : x
  2. Step 2: Convert to fraction form
    54,560.40/81,840.60 = 47,648.40/x
  3. Step 3: Cross multiply
    54,560.40x = 81,840.60 × 47,648.40
  4. Step 4: Simplify right side
    54,560.40x = 3,899,573,645.04
  5. Step 5: Solve for x
    x = 3,899,573,645.04/54,560.40
  6. Step 6: Final answer
    x = 71,472.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.